Expansion-joint.



`'JlEG'lfllALlD d'. S. PIGTT, OF BRIDGEPORT, CONNECTICUT.

EXPANSION-T 01N T. l

"finanufacture A further object of the invention is to provide anexpansion joint for connecting pipe lines which allows a great degree offlexibility betwee'nthe respective pipe ends.

Further objects of the invention will appear more fully hereinafter.

The invention consists substantially in the construction, combination,location and relative arrangement of parts, all as will be more fullyhereinafter set forth, as shown by the accompanying drawing, and finallypointed out in the appended claims. Referringl to the drawings v Figurel is a view in side elevation, partly in vertical section, of an appliedjoint embodying my invention.

Fig. 2 is asectional view taken on the line 22, Fig. 1', and looking inthe direcl tion of the arrows. The same part is designated by the samereference numeral wherever it occurs throughout the several views.

In various types of expansion'joints such as metallic expansion joints,the packed expansion joints are not applicable for some uses, due to thefact that they form too stiff' a joint and allow insufficientflexibility 40 between the pipe ends. This is especially true in largepiping systems used in connection with steam turbines where thecondenser is suspended directly from the turbine, and moved with theexpansion of the turbine by heat.

Specication of Letters Patent.

Application filed July 19, 1916. Serial N o. 110,119.

fromthe central axis thereof on its under surface. 'A ypair of rings 6are provided, with outer,` opposed, surfaces beveled toward thecentral'axis thereof, as shown. A. seamless tube, 7 preferably of rubberrein- 60 forced with duck, is inserted between the rings 6 and theflange 4, and is compressed tight therein by means of tap bolts 8, whichpass through the flange 4, tube 7, and sleeve 6, as clearly shown. Thebolts 8, are radial and as many of them may be employed as desired ornecessary. In practice, I prefer to space them equally around the flange4, between the flange bolts 9.

It will be seen that the tap bolts hold the respective parts together ina water tight condition, and that the sleeve portions 5 of the flanges4, together with the beveled shaped sleeves or rings 6, form aprotection against undue straining outward of the rubber tube bypressure in the interior of thev pipe, and inwardly by a vacuum insideof the pipe, respectively.

The flanges 4 are secured to the standard cast pipes 14 and 17 and thescrew flange 80 16, respectively by the flange bolts 9 and 15.

' lVhilel have shown and described the tube 7 as being a composition ofrubber and duck, it is to be understood that my invention in its broadscope, as defined in the claims, is not to be limited thereto, as anysubstance or composition which is water tight or air tight, andflexible, may be readily substituted.

Having now set forth the object and nature of my invention, and astructure embodying the principles thereof, what 1 claim as new anduseful, and of my own invention, and desire to secure by Letters Patent,is,-

1. An expansion joint for connecting pipes comprising a ring with abeveled exterior surface and a flange adapted to surround said ring witha beveled interior surface, a flexible tube` surrounding said ring andinterposed between said ring and 'said flange, and means passing throughsaid ring, tubing and flange for clamping said tubering and flangetogether. 4

2. An expansion joint for connecting pipes comprising a ring with abeveled exterior surface and a flange adaptedto surroundsaid ring with abeveled interior surface, a flexible tube surrounding said ring andinterposed between said ring and said f tube interposed between saidrings and flange and-radially extending bolts passing through said rintubing` and flange for.

clamping the same together.' i

3. Anexpansmn joint for a conneetlng pipes comprising a pair` .of ringseach. beveled on its eXter1or surface with the ends flanges and meansfor clamping said flanges, rings and said tube together to allow freemovement of'said tube between the beveled surfaces of said rings andflanges substan-l tially 'as shown and desoribed. p 4. An expansion.joint. for connecting nemesi pipes comprising a pair of rings eachbeveled on its exterior surface with the ends thereof of least diameteropposed to each other, a pair of flanges, each of said flan essurrounding one of said rings and beve ed on its interior surface, and asingle flexible tube interposed between said rin s and flanges andradially extending bo ts for `clamping said flanges, rings and said tubetogether to allow free movement of said tube between the beveledsurfaces of Said rings and flanges substantially as shown and described.

In testimony whereof I have hereunto set my hand on this 12th day ofJuly A. T

vREGINALD J. S. PIG'TT

